Technosol Development and Soil Rehabilitation Techniques

Technosols are engineered soils formulated from combinations of mineral and organic wastes, tailored to restore degraded landscapes and provide ecosystem services in contexts ranging from post-mining sites to urban green infrastructure. Development principles centre on selecting suitable parent materials—such as mine spoils, construction and demolition by-products, composts or hydrochars—and blending them to achieve target properties in terms of structure, porosity, nutrient availability, water retention and microbial colonisation. Rehabilitation techniques encompass physical mixing, hydrothermal treatments, addition of water-soluble polymers or humic substances, and biological enhancements through plant root reinforcement and microbial inoculation. Recent advances emphasise circular economy approaches that valorise local waste streams, reduce transport impacts and deliver multifunctional soils capable of carbon sequestration, water management, vegetation support and pollution mitigation. Applications span climate-smart mine reclamation, rooftop agriculture, stormwater buffering and urban de-sealing, illustrating the global significance of Technosols for land restoration, sustainable agriculture and infrastructure resilience.

Research from Nature Portfolio

Recent studies have proposed constructing soils from mining and industrial wastes to create Technosols for mine site reclamation and climate-smart remediation. Utilising geolocated mining data and carbon stock assessments, researchers demonstrate that Technosols engineered from mine spoils and associated by-products can sequester up to 60 % of CO₂ emissions arising from soil disturbance, while restoring key ecosystem functions such as nutrient cycling, water retention and biological diversity. Field-scale trials illustrate that selecting appropriate parent materials and amendment ratios is critical to optimise physicochemical properties, and that these constructed soils can support vegetation establishment and long-term carbon storage in post-mining landscapes.

Technosol Development and Soil Rehabilitation Techniques publication trend

The graph below shows the total number of articles in technosol development and soil rehabilitation techniques across all publications each year (not limited to Nature Index journals).

Technical terms

Technosol: An anthropogenic soil analogue engineered from mineral and organic wastes to replicate key soil functions.

Parent material: Foundational components, natural or waste streams, selected to assemble a Technosol with desired properties.

Hydrothermal carbonization: A thermal process converting biomass under heat and pressure into carbon-rich hydrochar for soil amendment.

Water-soluble polymer: Biodegradable polymer additives used to enhance cohesion and water retention in engineered soils.

Green infrastructure: Designed urban systems integrating soils and vegetation to provide ecosystem services such as stormwater management.

References

1. Anthropogenic soil as an environmental material, as exemplified with improved growth of rice seedlings. Carbon Research (2024).
2. Constructing soils for climate-smart mining. Communications Earth & Environment (2023).
3. Using constructed soils for green infrastructure – challenges and limitations. The Soil (2020).
4. Constructed Technosols: A Strategy toward a Circular Economy. Applied Sciences (2021).
5. Potential of Technosols Created with Urban By-Products for Rooftop Edible Production. International Journal of Environmental Research and Public Health (2020).
6. A Geochemical and Agronomic Evaluation of Technosols Made from Construction and Demolition Fines Mixed with Green Waste Compost. Agronomy (2021).